107C wire temp? Holy crap. Something is definitely wrong. I wish you could put a current shunt in there to find out what that power draw is through those lines. I'd contact EVGA. Your PSU is supplying all the current the board is asking for, but it shouldn't be asking for THAT much. The boards are designed to supply 75W of power through each PCI-E slot, and I'm damn sure they tested lots of TRI-SLI configs.

^ So is this only 760 Classy or are 759 Classy (w N200) also showing symptoms? Huh......I haven't entertained the ida of a 3rd 480 at this point as its only necessary for inflating Vantage somewhat.....even then 2 x 480's around P42 - 44K and 3 x 480's are barely cracking 50K without extremely high I7 OC's.......interesting stuff.

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Introducing me n my OCD to Watercooling, is like taking an Alcoholic to an "all you can drink" Beach Bar in Mexico

Read the last page of the thread on XS. Confirms that the melted PSU pins is a connection issue, which is made worse by the amount of draw through the connection. The link MAC posted was originally about Classy's burning the traces on the mobo.

But also note that the Classified 4-way SLI has a molex adapter on the mobo to supply extra power to the PCI-E slots without going through the 24-pin.

TBH, I think I'd be swapping mobo's if you are dead set on running tri-SLI 480's.

This is the same thing we ran into when running 4x4890's on these motherboards. Any motherboard without an additional Molex near the PCI-E slots is prone to this issue. It is inherently a design flaw with the ATX standard and too much current is going through a single wire. There are solutions however. Just a bit of soldering and you can add additional power from a molex connector to alleviate the amount coming from the single connector in the ATX stack.

Here are a couple pics of my mod...

You basically add 12v from the molex to the backside of the 24-pin at the two 12v locations, as well as a couple grounds.

I know it isn't the best solution as it involves soldering and what not, but I am sure EVGA would be fine with it for warranty purposes if you contacted them about it. There really is no other way. That is why boards like the UD9 and R3E have additional molex connections near the PCI-E slots...to alleviate this issue.